Thread: Calculations problem...?

It's really basic. Sorry for posting the whole program, but I have no idea where I've gone wrong.
While executing the bold statement below: If I type 100000 as the policy amount, I get -124 as the output. It should be 400. What have I done?? :-(

Code:

#include<stdio.h>
int main(void)
{
  char hlth, resi, sex;
  int age,pol_amt;
  float prem;

  printf("Enter health grade, residence, sex, age:");
  scanf( "%c %c %c %d", &hlth, &resi, &sex, &age);

  if( hlth=='E' && (age>=25 && age<=35) && resi=='c')

  {
     printf("\nThe person can be insured.");
     if( sex=='M' )
     {
        printf("\nThe maximum policy amount is 200000");
        printf("\nEnter the policy amount:");
        scanf("%d", &pol_amt);

        prem= (pol_amt/1000)*4;

        printf("\nThe premium rate is %f",prem);
     }
    else if( sex=='F' )
    {
       printf("\nThe maximum policy amount is 100000");
       printf("\nEnter the policy amount:");
       scanf("%d", &pol_amt);

       prem=(pol_amt/1000)*3;
      printf("\nThe premium rate is %f",prem);
    }
  }
  else if( hlth=='P' && (age>=25 && age<=35) && resi=='v' && sex=='M')
  {
     printf("\nThe person can be insured.");
     printf("\nThe maximum policy amount is 10000.");
     printf("Enter the policy amount:");
     scanf("%d", &pol_amt);

     prem=(pol_amt/1000)*6;
     printf("\nThe premium rate is %f",prem);
  }
  else
  {
    printf("\nThe person is not insured.");
  }

getch();
clrscr();
}